Edison’s vacuum tube.

what he needed to rectify alternating radio signals into DC signals required tooperate headphones. By hooking up Edison’s vacuum tube to a receiving antenna, the tube worked like a diode. When the signal voltage increased in one direction, it made the plate positive (+), and the signal got through. When the signal voltage increased in the other direction of the AC cycle, applying a negative (–) charge to the plate, the signal stopped.

The vacuum tube, also called the electron tube, required a source of electrons to function. In Edison’s original electron tube, the electron source, called the cathode, was the filament that, when heated red-hot, emitted electrons that flew off into the vacuum toward the positively charged plate, called the anode. The effect of heating the cathode to activate the electrons was called thermionic. Other electron tubes used  ligh voltage to pull the electrons out of a cold cathode. Electronic emission also occurred by applying light energy to a photosensitive cathode. Tubes using this effect were called photoelectronic vacuum tubes. Although a variety of methods existed to remove electrons from the cathode, the thermionic vacuum tubes were the most widely used. The cathode was either heated by resistors within or used a separate source of power for heating. The vacuum tube consisted of a glass or metal enclosure with electrode leads brought out through the glass to metal pins molded into a plastic base (Fig. 1.5).

Free Download Portable Adobe Photoshop CS5 (70 MB)

Photoshop CS5 was launched on April 12, 2010. Photoshop is the undisputed king of photography software, but many of us who use it every day haven’t bothered to buy every new version. With the launch of Photoshop CS5, which marks the 20th anniversary of the package, I wanted to know if the upgrade was worth the money.

CS5 has four major improvements that – on paper – jumped out at me. The most exciting is content-aware fill – and when I first used it on one of my photos, my jaw dropped.


Significant changes:

  •  Content Aware Fill
  •  Puppet Warp Tool
  •  64 bit for Macintosh
  •  Bristle Tips
  •  Mixer Brush
  •  Automatic Lens Correction
  •  Improved Camera RAW processing
  •  Camera RAW grain control
  •  Improved Ray Tracing (Extended)
  •  Repousse 3D extrusion tool (Extended)
  •  Image based lights (Extended)



Mozilla Firefox 4.0 Beta Released

The Firefox project began as an experimental branch of the Mozilla project by Dave Hyatt, Joe Hewitt and Blake Ross. They believed the commercial requirements of Netscape's sponsorship and developer-driven feature creep compromised the utility of the Mozilla browser.[18] To combat what they saw as the Mozilla Suite's software bloat, they created a stand-alone browser, with which they intended to replace the Mozilla Suite. On April 3, 2003, the Mozilla Organization announced that they planned to change their focus from the Mozilla Suite to Firefox and Thunderbird.[19]

The Firefox project has undergone several name changes. Originally titled Phoenix, it was renamed because of trademark issues with Phoenix Technologies. The replacement name, Firebird, provoked an intense response from the Firebird free database software project.[20][21][22] In response, the Mozilla Foundation stated that the browser should always bear the name Mozilla Firebird to avoid confusion with the database software. Continuing pressure from the database server's development community forced another change; on February 9, 2004, Mozilla Firebird became Mozilla Firefox,[23] often referred to as simply Firefox. Mozilla prefers that Firefox be abbreviated as Fx or fx, though it is often abbreviated as FF.[24] The Firefox project went through many versions before 1.0 was released on November 9, 2004. After a series of stability and security fixes, the Mozilla Foundation released its first major update, Firefox version 1.5, on November 29, 2005. Mozilla Firefox 1.5.0.12 is the final version officially supported under Windows 95.

Tentatively scheduled for release in November 2010, Firefox 4 is currently in the beta stage with the fourth beta released on August 24, 2010. It will bring a new, "faster" user interface.[52] Early mockups of the new interface on Windows,[53] Mac OS X,[54] and Linux[55] were first made available in July 2009. Other features slated for Firefox 4 include a new Account Manager,[56] improved notifications, application tabs, a redesigned extension manager,[57] and support for multitouch displays and 64-bit systems.[58]

Get Mozilla Firefox 4.0 Beta.

Free Download Autodesk 3Ds Max 2009 Full Version

Educational programs at the high school through university level use 3ds Max in their courses on 3D computer graphics and computer animation. Students in the FIRST competition for 3d animation are known to use 3ds Max.

It is not open sourc. But I have KeyGen. You also download this KeyGen.

Download Link

How to use custom favicon in blogger blog

For those who don't know what Favicon is 'Favicon is a small icon(image) displayed at the beginning of the address bar of the browser.It is also called Favourite Icon,Pageicon and urlicon.


The main advantage of creating and using favicon is ,it makes it easy to find your blog or site when someone favourited or bookmarked your site/blog among several other sites.





Follow those steps to add your favicon in blogger blog.

1. Fast Create a 16x16 .png format icon.

2. Upload it any host. You can also use draft blogger post.

3. Now the favicon link copy a notepad and log in in your blogger dashboard > layout> HTML.

4. Press CTRL+F and find <title><data:blog.pageTitle/></title> code.

5. Add <link href='PNG FORMET ICON LINK' rel='shortcut icon' type='image/png'/> code just after <title><data:blog.pageTitle/></title>.

Now save your Template.

About Me

I am Noor Elahi Shibly. My nick name was Shibly. I am in class IX. My hobby is Blogging. In my free hours, I watch Television, hear songs, Blogging and Programming. I enjoy Cricket match very much and it is my favorite games. I also like to read novels and Story book.

Wellcome to My Site

Thanks for visiting My Site. My name is Noor Elahi Shibly. I'm live in Bangladesh.
I am a blogger Fan. Blogging is my hobby. I am a Windows user. My favorite browser Mozilla Firefox.